发明名称 |
VECTOR GENERATOR FOR COMPUTER GRAPHICS |
摘要 |
<p>A VECTOR GENERATOR FOR COMPUTER GRAPHICS A vector generator for a computer graphics system of the type in which the beam of a CRT is deflected by analogue deflection signals to form an image comprised of a plurality of discrete vectors each defined, in each of two, orthogonal deflection axes, by first and second digital words respectively defining the initial position and the length of the vector. The vector generator includes circuitry that ensures that each vector is drawn with substantially uniform brightness regardless of the length of the vector. Additional circuitry is furnished so that an instantaneous indication may be obtained of a light pen strike or the occurrence of edge violations. This circuitry also yields continuous digital information concerning the current beam position.</p> |
申请公布号 |
CA1169983(A) |
申请公布日期 |
1984.06.26 |
申请号 |
CA19820393492 |
申请日期 |
1982.01.04 |
申请人 |
WESTERN ELECTRIC COMPANY, INCORPORATED |
发明人 |
MACDONALD, JOHN B.;PATBERG, JOHN K.;RAAMOT, JAAN |
分类号 |
G06F3/023;G06F3/048;G06F3/153;G09G1/08;(IPC1-7):G09G1/06 |
主分类号 |
G06F3/023 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|